TY - JOUR
T1 - Effectiveness of stress grading coatings on form wound stator coil groundwall insulation under fast rise time pulse voltages
AU - Espino-Cortes, Fermin P.
AU - Cherney, Edward A.
AU - Jayaram, Shesha
N1 - Funding Information:
Manuscript received December 27, 2004; revised February 21, 2005. This work was supported by NSERC of Canada. The work of F. P. Espino-Cortes was supported by CONACyT of Mexico. Paper no. TEC-00363-2004. F. P. Espino-Cortes is with the Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON N2L 6P1, Canada, on leave from the National Polytechnic Institute, Mexico City, Mexico. E. A. Cherney and S. Jayaram are with the Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada. Digital Object Identifier 10.1109/TEC.2005.853745
PY - 2005/12
Y1 - 2005/12
N2 - In this paper, the effectiveness of stress grading coatings (SGCs) on form wound stator coil groundwall insulation under fast rise time pulses is analyzed. The combined performance of the stress grading coating and the semiconductive slot coating is studied under fast rise time transient voltages. During the rapid rise of voltage, the high stress moves from the stress grading coating to the semiconductive coating at the end of the slot. According to the results, it is evident that the design of both the stress grading and semiconductive slot coatings must be done together for effective stress relief. The use of materials with varistor behavior in the stress grading coating, combined with a high conductivity semi-conductive slot coating, is analyzed as a solution to the high stress that develops at the slot end of form wound stator coil groundwall insulation of inverter fed drive (IFD) motors.
AB - In this paper, the effectiveness of stress grading coatings (SGCs) on form wound stator coil groundwall insulation under fast rise time pulses is analyzed. The combined performance of the stress grading coating and the semiconductive slot coating is studied under fast rise time transient voltages. During the rapid rise of voltage, the high stress moves from the stress grading coating to the semiconductive coating at the end of the slot. According to the results, it is evident that the design of both the stress grading and semiconductive slot coatings must be done together for effective stress relief. The use of materials with varistor behavior in the stress grading coating, combined with a high conductivity semi-conductive slot coating, is analyzed as a solution to the high stress that develops at the slot end of form wound stator coil groundwall insulation of inverter fed drive (IFD) motors.
KW - Fast rise time pulses
KW - Field dependent conductivity
KW - Form wound stator coils
KW - Inverter fed drive motors
KW - Semiconductive slot coating
KW - Stress grading coating
KW - Varistor material
UR - http://www.scopus.com/inward/record.url?scp=29244491474&partnerID=8YFLogxK
U2 - 10.1109/TEC.2005.853745
DO - 10.1109/TEC.2005.853745
M3 - Artículo
SN - 0885-8969
VL - 20
SP - 844
EP - 851
JO - IEEE Transactions on Energy Conversion
JF - IEEE Transactions on Energy Conversion
IS - 4
ER -